Error correction for a persistent resource allocation

Abstract

Methods and apparatus for communicating and utilizing persistent allocation of resources are described herein. A base station can allocate persistent resources to a client station, and can associate the client station or persistent resource allocation with a particular shared NACK channel. The base station can monitor the NACK channel for a NACK indicating a map error. The base station can also monitor the resource allocation to implicitly determine a map error. The base station can resend one or more persistent resource allocation information elements in response to the NACK or implicit error determination. A client station having a persistent resource allocation can monitor persistent resource allocation information elements in map messages and can indicate failure to receive a persistent resource allocation information element in a NACK message on a preassigned share NACK channel.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS[0001]The application claims the benefit of U.S. Provisional Patent Application No. 60 / 971,526 filed Sep. 11, 2007 for “PERSISTENT UPLINK RESOURCE ALLOCATION”; and U.S. Provisional Patent Application No. 61 / 013,622 filed Dec. 13, 2007 for “ERROR CORRECTION FOR A PERSISTENT RESOURCE ALLOCATION”; which are all incorporated herein by reference in their entirety for all purposes.BACKGROUND[0002]I. Field of the Invention[0003]The invention relates to the field of wireless communications. More particularly, the invention relates to the field of resource allocation in a wireless communication system.[0004]II. Description of Related Art[0005]Wireless communication systems may support discontinuous transmission in which the various parties to a communication link use resources only as needed. Limiting the allocation and consumption of resources to those devices actively engaged in communications increases the efficiency of a wireless communication syst...

AI Technical Summary

Benefits of technology

[0011]Alternatively, the base station may recover from an error condition by sending an persistent allocation information element specifying a first allocation to a client station for a purpose of carrying HARQ traffic, by detecting a series of failed HARQ packet transfers associated with the first allocation, and resending the persistent allocation information element to the client station.

Problems solved by technology

However, each device may need to request an allocation of resources before it is granted the opportunity to communicate.

The request and grant of communication resources can itself consume a large amount of resources that otherwise could be used to support additional users or provide increased bandwidth to active users.

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